Ultrasensitive determination of mercury by ICP-OES coupled with a vapor generation approach based on solution cathode glow discharge

作     者：Zhaoqing Cai Huijun Zou Yirui Chen Zheng Wang Zhaoqing Cai;Huijun Zou;Yirui Chen;Zheng Wang

作者机构：Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2022年第33卷第5期

页      面：2692-2696页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：supported by the Instrument Development Project of the Chinese Academy of Sciences(No.YZ201539) the National Natural Science Foundation of China(No.21175145) the Shanghai Technical Platform for Testing and Characterization on Inorganic Materials(No.19DZ2290700) 

主　　题：Solution cathode glow discharge Vapor generation ICP-OES Mercury Microplasma 

摘      要：We herein proposed a sample introduction technique based on solution cathode glow discharge(SCGD)of a portable design for inductively coupled plasma-optical emission spectrometry(ICP-OES)and its ap-plication in sensitive determination of *** products from SCGD containing mercury vapor,were transported by an Ar flow to ICP spectrometer for detection.A gas liquid separator(GLS)and a dryer were used to condense and remove most of the accompanying moisture,which greatly improved both the stability and sensitivity of the *** detection limit(DL)acquired by this developed method was 0.22μg/L(194.1 nm),which was nearly 82 times lower than that obtained by pneumatic nebuliza-tion(PN).The relative standard deviation(RSD)was 1.4%(n=14)for a 50μg/L *** solution(HNO_(3),pH 1)can effectively elute mercury *** accuracy and practicality were also demonstrated by the determination of GBW10029(fish)certified reference material,shrimp,crawfish,soil and human hair *** results showed good consistency with the certified values and the values obtained us-ing inductively coupled plasma−mass spectrometry.